Wrench open end having a pushing tongue
A wrench includes an open end which includes two jaws and a connection portion connected between the two jaws. A clamping portion is defined in an inside of each jaw and located close to a first side of each jaw. A loose portion is defined in the inside of each jaw and located close to a second side of each jaw. A width between the two respective loose portions of the two jaws is wider than a width between the two respective clamping portions of the two jaws. A pushing tongue is located between the two jaws. A nut can be clamped by the clamping portions of the two jaws by compressing the pushing tongue, and is freely rotatable relative to the open end when located in a space enclosed by the loose portions.
The present invention relates to a wrench that includes an open end and a pushing tongue is located between jaws. Each jaw has a clamping portion and a loose portion which is recessed inward from the inside of each jaw.
BACKGROUND OF THE INVENTIONA conventional wrench includes a handle and an open end which has two jaws and a U-shaped clamping opening is defined between the two jaws. The width of the clamping opening is designed to accommodate a bolt head or a nut and the two jaws clamp two sides of the object by the clamping surfaces thereof. By rotation of the wrench, the nut clamped by the two jaws can be rotated. Nevertheless, after the handle is rotated an angle, the open end has to be removed from the nut and be mounted to the nut again. If there are objects located around the nut, the handle can only be rotated a limited angle. In this situation, the user has to repeatedly mount and remove the open end. This takes a lot of time and affects the efficiency of work.
The present invention intends to provide a wrench having an open end including two jaws. Each jaw includes a clamping portion and a loose portion which is recessed inward from an inside of each jaw. A pushing tongue is located between the two jaws so that the nut can be clamped by the clamping portions by compressing the pushing tongue, and freely rotated when being pushed to the space enclosed by the loose portions by the pushing tongue.
SUMMARY OF THE INVENTIONThe present invention relates to a wrench which comprises a handle with an open end connected to an end thereof and the open end includes two jaws connected by a connection portion. A clamping portion is defined in an inside of each jaw and located close to a first side of each jaw. A loose portion is defined in the inside of each jaw and located close to a second side of each jaw. A width between the two respective loose portions of the two jaws is wider than a width between the two respective clamping portions of the two jaws. A pushing tongue is located between the two jaws.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
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While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims
1. A wrench comprising:
- a handle having an open end connected thereto and the open end including two jaws and a connection portion connected between the two jaws, a clamping portion defined in an inside of each jaw and located close to a first side of each jaw, a loose portion defined in the inside of each jaw and located close to a second side of each jaw, a width between the two respective loose portions of the two jaws being wider than a width between the two respective clamping portions of the two jaws, and
- a pushing tongue located between the two jaws.
2. The wrench as claimed in claim 1, wherein the pushing tongue extends from the connection portion of the open end and a distal end of the pushing tongue extends upward 20 to 30 degrees relative to a body of the pushing tongue.
3. The wrench as claimed in claim 1, wherein the pushing tongue is connected to the connection portion at a position close to the first side of the open end.
4. The wrench as claimed in claim 1, wherein each of the loose portions is a curved recess.
5. The wrench as claimed in claim 1, wherein the clamping portions each have a protrusion extending therefrom.
6. The wrench as claimed in claim 1, wherein the distal end of the pushing tongue is a fork-shaped end.
7. The wrench as claimed in claim 1, wherein the distal end of the pushing tongue is a ring-shaped end.
8. The wrench as claimed in claim 1, wherein the distal end of the pushing tongue is a C-shaped end and flexible plates extend from an inner periphery of the C-shaped end.
Type: Grant
Filed: Nov 24, 2003
Date of Patent: May 31, 2005
Inventor: Chih-Ching Hsien (Feng Yuan, Taichung)
Primary Examiner: Jacob K. Ackun, Jr.
Application Number: 10/718,633